.fa-spin{
    animation: fa-spin 2s infinite linear;
}
@keyframes fa-spin {
    0% {
     transform:rotate(0deg)
    }
    100% {
     transform:rotate(360deg)
    }
}
@keyframes fade-in2 {
    0% {
     margin-top:-50px;
     visibility:hidden;
     opacity:0
    }
    100% {
     margin-top:0px;
     visibility:visible;
     opacity:1
    }
}